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  <h2>Ebiten example - typewriter</h2>
  <iframe src="typewriter.content.html" width="640" height="480"></iframe>
  <div class="card"><pre class="card-body"><code class="language-go">// &#43;build example

package main

import (
        &#34;log&#34;
        &#34;strings&#34;

        &#34;github.com/hajimehoshi/ebiten&#34;
        &#34;github.com/hajimehoshi/ebiten/ebitenutil&#34;
)

var (
        text          = &#34;Type on the keyboard:\n&#34;
        counter       = 0
        bsPrevPressed = false
)

func update(screen *ebiten.Image) error {
        // Add a string from InputChars, that returns string input by users.
        // Note that InputChars result changes every frame, so you need to call this
        // every frame.
        text &#43;= string(ebiten.InputChars())

        // Adjust the string to be at most 10 lines.
        ss := strings.Split(text, &#34;\n&#34;)
        if len(ss) &gt; 10 {
                text = strings.Join(ss[len(ss)-10:], &#34;\n&#34;)
        }

        // If the enter key is pressed, add a line break.
        if ebiten.IsKeyPressed(ebiten.KeyEnter) &amp;&amp; !strings.HasSuffix(text, &#34;\n&#34;) {
                text &#43;= &#34;\n&#34;
        }

        // If the backspace key is pressed, remove one character.
        bsPressed := ebiten.IsKeyPressed(ebiten.KeyBackspace)
        if !bsPrevPressed &amp;&amp; bsPressed {
                if len(text) &gt;= 1 {
                        text = text[:len(text)-1]
                }
        }
        bsPrevPressed = bsPressed

        counter&#43;&#43;

        if ebiten.IsRunningSlowly() {
                return nil
        }

        // Blink the cursor.
        t := text
        if counter%60 &lt; 30 {
                t &#43;= &#34;_&#34;
        }
        ebitenutil.DebugPrint(screen, t)
        return nil
}

func main() {
        if err := ebiten.Run(update, 320, 240, 2.0, &#34;Typewriter (Ebiten Demo)&#34;); err != nil {
                log.Fatal(err)
        }
}
</code></pre></div>

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